Side quests become available the players completed the Correctional Treatment main quest. They provide various battles apart from the main storyline, and new quests are unlocked every few hours. Some of these side quests also carry additional rules. Each quest rewards the players with 2 gems, some coins and three cards which give random equipment, irrespective of the player's selected faction.

Some possible rules include:

Inverted Controls

Fight in the Dark

Score Victory

Opponent Regenerates

Opponent in Shadow Form

Health drops Overtime

Opponent is Invisible

Enemy restore Health with Hits

Enemy can be Damaged only while Stunned

Head hits Only

Kicks Only

Survival

Blast Zones

Passing Bleeding Effect

Win on Timeout

Unarmed Fight

Restore Health with Hits

No Jumps

Fists Only

Stacking Poison Effect

Opponent Regenerates Health in Shown Zone

Shadow Energy Boost

Opponent Gains Shadow Energy in Shown Zone

Apart from the regular side quests there are also some special quests that become available occasionally. Although the rewards the same, these side quests have a small story attached to them. These are the Legends Theater quests in Chapter I, Open Lessons in Chapter II, and Simulations in Chapter III.

Special Events are limited-time quests that will reward the players with trophies, in addition to various other rewards. These trophies can then be exchanged for exclusive equipment while the event is ongoing. The players must reach level 3 before they can participate in any special event. In Special Events, the difficulty of the fight does not depend on the power of the equipment but on its rarity and the player's skills. Each event contains two modes - Grand, with its own set of rules in every round, and Regular mode. Following is a list of events in the game: